... worm complementary: WS180 I=40, Center distance A=180mmc: Two Level of worm gear and worm complementary: Double enveloping worm gear ... /se. pressure box used steel castingsD. frame system:a. Two closed frame, frame surface section 200×260, Material: ZG35b. ... pressure gauge, unloading device, relief valve, filter device, liquid level display, the system pressure to control grade functions.6. Processing ...